Fujitsu Corporation

Kohtaro Gotoh

Hirotaka Tamura

Yoshiyasu Nakashima

Yutaka Igarashi

Richard L Schober, Jr

Yoichi Koyanagi

Takehiko Hayashi

Hajime Hayashi

Takao Goto

Raghu Sastry

Norio Fujimaki

A method and apparatus automatically initialize and tune a link in a network system. The link couples one router to another router and may be implemented as a high speed, plesiochronous, parallel link. The apparatus includes a first link control unit coupled to a first end of the link and a second link control unit coupled to a second end of the link. The second link control unit is capable of communicating with the first link control unit to achieve automatic adjustment of the operating parameters of the link to maximize signal propagation across and minimize the power consumption of the link. The method of initializing and tuning across a high speed link in a network is also disclosed.

Automatic initialization and tuning across a high speed, plesiochronous, parallel link

A plurality of SQUID flux sensors are supplied with their respective bias currents at the same time from a bias source. A superconducting multiplexer multiplexes output signals of the SQUID flux sensors during an interval of time when the bias currents are supplied to the SQUID flux sensors. A multiplexer, placed in a room-temperature environment, distributes each of the multiplexed output signals of the SQUID flux sensors to a respective one of the output terminals which correspond to the SQUID flux sensors. Each signal which has been output to an individual output terminal is counted by a counter, so that an external magnetic flux to a corresponding SQUID flux sensor is measured.

Multichannel SQUID flux meter having multiplexed SQUID flux sensors

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Kawasaki, Japan

Kohtaro Gotoh